Exactum rooftop greenhouse experiment grows herbs

A greenhouse has been built on the roof of Exactum in a collaboration by the Department of Computer Science and the Fifth Dimension science project. To begin with, sedum grass is growing on the roof and tomatoes, courgettes and chilli in the greenhouse. The greenhouse is 9.4 square metres large.

The motivation for the computer scientists is the estimation that 2% of the greenhouse gas emissions caused by humans are emitted by equipment using information technology. This is more than e.g. air traffic produces globally. To the scientists, this is reason enough to look into how to decrease the impact of information technology on global warming.

The facilities of the rooftop greenhouse were finished in 2011, and in the spring, the success of different utility plants has been tested. The scientists were driven by the idea that the greenhouse could be maintained with the excess heat from the servers.

Now, crops like tomatoes, rosemary, courgettes and various kinds of chilli are grown in Kumpula. A similar project is carried out in Paul Brenner’s Green Cloud super-computer project at the University of Notre Dame in Indiana, USA.

Scientists have been up on the Exactum roof before. Before the greenhouse was installed, they were testing the cold resistance of computers in tents in winter. Some of the same servers are still outside after surviving for three winters. So far, the only problems have been observed with one type of fan. The majority of the computers have been able to survive the long-term outdoor cooling perfectly well. The results are very encouraging, since the cooling of the data centres stands for 20-40% of their power consumption, sometimes even more in older data centres.

The greenhouse on the roof is surrounded by an experimental green belt. It is a part of the Fifth Dimension project and World Design Capital Helsinki 2012. The purpose of the green belt is to discover the best solution for roof gardens in Finland.

Professor Jussi Kangasharju and researcher Mikko Pervilä are the Computer Science Department members of the project Heating up the fifth dimension.

See how the plants grow and the research progresses >>

Text: Minna Meriläinen-Tenhu
Photo: Mikko Pervilä
Translation: Marina Kurtén
 

Created date

14.08.2012 - 16:44

Inter-university research and training centre on information security

The University of Helsinki and Aalto University have set up a joint research centre focusing on information security. The new centre, HAIC (Helsinki-Aalto Centre for Information Security), will coordinate the Master’s-level security education between the university and Aalto, with links to research and doctoral education.

The idea is to build bridges to the industries and gain their support for the education, and e.g. grants for MSc students coming from outside the EU, the head of the Department of Computer Science, Sasu Tarkoma, says.

Computer science undergraduate Petteri Timonen awarded in US science competition

Petteri Timonen, 19, came second in his category of the Intel International Science and Engineering Fair (ISEF) in Phoenix, Arizona.

 

On Friday, 15 May, Timonen, who is studying computer science at the University of Helsinki, was awarded a grant worth 1500 USD, some 1330 euros, in the Systems Software category of the Intel ISEF science competition.
 
As his entry, Timonen submitted a software tool he developed for Finland’s Red Cross to make mobile blood runs around the country as cost-effective as possible. Timonen implemented his tool in cooperation with the Blood Service.

The tool has gained international attention, as no tool like it seems to have been developed anywhere else. Timonen has also negotiated with the American Red Cross by email.

Renewed Carat App Gives a Smart Boost to Battery

 
The Carat Project Team at the University of Helsinki, Department of Computer Science, has published a new version of the popular mobile energy-awareness application.

After launch in June 2012, Carat has helped over 850,000 users, of which 41 per cent have been Android and 59 per cent iOS users, respectively. The new user interface follows modern application design guidelines and presents battery information in a more intuitive and easy to use manner.

- In addition to the new user interface, we have increased the accuracy of the energy saving recommendations of Carat, says Professor Sasu Tarkoma, the leader of this research done at the university.

The user interface features the number of energy intensive applications (Hogs), energy anomalies (Bugs) and user recommendations (Actions) at a glance on the main screen as well as global energy statistics for the device community.

Cover Song Identification Using Compression-based Distance Measures

M.Sc. Teppo E. Ahonen will defend his doctoral thesis Cover Song Identification Using Compression-based Distance Measures on Friday the 1st of April 2016 at 12 o'clock in the University of Helsinki Exactum Building, Auditorium CK112 (Gustaf Hällströminkatu 2b).  His opponent is Academy Professor Petri Toiviainen (University of Jyväskylä) and custos Professor Esko Ukkonen (University of Helsinki). The defence will be held in Finnish.

Measuring similarity in music data is a problem with various potential applications. In recent years, the task known as cover song identification has gained widespread attention. In cover song identification, the purpose is to determine whether a piece of music is a different rendition of a previous version of the composition. The task is quite trivial for a human listener, but highly challenging for a computer.